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18=12-3/2a
We move all terms to the left:
18-(12-3/2a)=0
Domain of the equation: 2a)!=0We add all the numbers together, and all the variables
a!=0/1
a!=0
a∈R
-(-3/2a+12)+18=0
We get rid of parentheses
3/2a-12+18=0
We multiply all the terms by the denominator
-12*2a+18*2a+3=0
Wy multiply elements
-24a+36a+3=0
We add all the numbers together, and all the variables
12a+3=0
We move all terms containing a to the left, all other terms to the right
12a=-3
a=-3/12
a=-1/4
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